Do any of you folks on the porch have experience with horses with PSSM1? What symptoms do your drafts exhibit? Do you manage it with diet or get rid of the horse? Do you take mares that test positive out of production or just be careful to only mate them to a negative horse?

Try the Vet Clinic

Yes. The Vet Clinic/Dr. Valentine provide some of the best and easiest to read information I've found on the internet. What I'm hoping to find here is some first hand teamster experience. Are any of you dealing with PSSM?

my Percheron gelding was well maintained on a diet of alfalfa pellets and cubes, corn oil and vitamin E and selenium. He was huge and healthy, good energy and good brain but admittedly, I never really asked him to do anything but easy trail rides and look pretty. If you intend to WORK a PSSM/EPSM horse, it could be a different story. My advice? Sell him to someone who just wants a trail horse for easy rides and great photos. They can make wonderful, safe and trustworthy horses for casual, non-competitive riders.